INSPECTION AND REPAIR

TM 10-3930-638-24&P

4-2. ENGINE MAINTENANCE (cont)

b. CyIinder Head and Valves (cont).

REMARKS

ITEM

ACTION

LOCATION

STEP

INSPECTION AND REPAIR (cont)

(cont)

NOTE

If valve guides (9 and 10) require replacement, perform c

below; otherwise proceed to d.

a. Remove

Use hydraulic press and press guides from

c. Valve guides

top, through cylinder head

(9 and 10)

b. Position

On top of cylinder head, Use hydraulic

press and push into head until valve

and install

guide protrudes 0,875 inch above top of

head

c. Ream

Use A43112 reamer. Ream to 0.3429-

0.3439 inch

Inspect

Check for damage and looseness. If plugs

d. Plugs

are damaged or loose, replace

(11 and 12)

NOTE

If plugs (11 and 12) require replacement, perform e, f, and g

below; otherwise proceed to h.

e. Plugs

Remove

Drill and pry out

(11 and 12)

Install

Until seated, then strike with hammer to

f. Plug (11)

expand

Install

g. Plug (12)

To 0.370 inch depth

4-12